Paul casamajob



(NpModeL) P. OASAMAJOR.

GLbTH HOLDER 'FOR FILTER PRESSES.

No. 355,437. Patented Jan. 4, 1887.

. tially, of a spring-clamp adapted to hold the UNITE STATES PAULOASAMAJOR, OF BROOKLYN, NEVV YORK.

.ATENT FFICE.

CLOTH-HOLDER FQR FILTER-PRESSES.

SPECIFICATION forming part of Letters Patent No. 355,437, dated January4:; 1887.

Application filed June 5, 1886. Serial No. 204,240. (No model.)

To aZZ whom it 11mg concern.-

Be it knownthat I, PAUL OAsAiuAJoR, of Brooklyn, in the county of Kingsand State of New York, have invented a new and useful ImprovementinCloth-Holders for Filter-Presses, which improvement is fully set forthin the following specification.

The present invention relates to filter-presses such as usedforfiltration of saccharine liquids, and has particular reference to themeans or devices for holding in place the cloths usually employed as thefiltering media. Some times the filter-cloths are thrown over the plateand hang from the top edge over both faces. If, however, as is usual,there are passages through the plates for the ingress and egress of theliquid to be filtered and for other purposes, the corresponding holes inthe cloths do not fit properly in their places should any shrinkage orstretching occur. Since it is important to keep these perforations vintheir proper position, it is often desirable to adjust the cloths at theedges after being put in place.

It has been proposed heretofore to usea separate cloth on each side ofthe plate, and to compensate for shrinkage and slack by connecting theedges of the cloth to hooks adj ustably secured to the frame. Thisnecessitates perforating the cloth at the pointswhere the hooks are tobe attached, and the protection of the edges of the holes, asbyinserting a metal eye. Such devices permit the cloth to be adjustedvertically;- but the cloth cannot be adjusted laterally to the shanks ofthe attaching-hooks.

The object of the present invention is to enable the cloth to be easilyand expeditiously adjusted in every direction, so as to keep it flat andeven, and maintain the passages or openings in their proper places, andalso to obviate the necessity of providing the edge of the cloth witheyes or holes for attachment to hooks. This object is accomplished bythe use of cloth holders or fasteners, consisting, essen cloth in placewith sufiicient firmness, While at the same time permitting it, with theutmost ease and rapidity,-to be slipped or moved in the same by hand, asdesired, for adjustment. i

The accompanying drawings illustrate the construction and operation of acloth-holder made in accordance with the invention, Figure I being aside elevation, showing part of the plate of a filter-press with theholders attached thereto, and Fig. II a vertical cross-section of theholder on a larger scale than Fig. I. v The plate A is or may be such asis in ordinary use in filter-presses, being provided on its face with aseries of grooves or passages for the liquid after passing through thecloth B. The latter is represented as provided with holes 0, which areplaced to correspond with the liquid channels passing longitudinallythrough, the press. The cloth is held inplace by the holders 0, whichconsist of a standard, 0, preferably of metal, and fastened permanentlyto the edge of plate A, and aspring or spring's,d. As shown, the Springs(1 are leaf-springs, and are secured at one end to the upper part ofstandard p, the other end of the spring being adapted to bear upon andclamp the edge of the cloth. To this free end of the spring is attacheda stud or knob, 0, having a rounded end, and fitting in a hole in thebase of standard c.

By reason of the pressure of spring d the cloth is clamped between thestud e and the standard so tightly as to prevent accidental displacementof the cloth, while the latter can be easily shifted by hand in anydirection, as may be required. As shown, there are three holdersattached to each plate, one being in the middle and the others at theends of the upper edges thereof; but obviously a greater or less numbermay be used, if desired.

To increase the stiiiness ofthe holding-spring d, a second and shorterspring, (1, is arranged to co-operate therewith, being secured to thestandard by the same rivets. As preferably constructed, the holder (3 isadapted to secure the cloths on each side of the plate A, there beingtwo clampingsprings, (Lidentical in construction and operation, one 011each side of standard 0. i

It is obvious that the invention is not limited to the preciseconstruction and arrangement of parts herein described andshown, thesebeing given by way of example only, but that a different kind andarrangement of spring-clamps could be adopted to answer the samepurposewithout'departing from the spirit of the invention.

I claim- 1. The combination, with the plate of a filter-press, of theclothholder comprising a springelamp adapted to hold the cloth firmly inplace, while permitting its ready adj nstment, substantially asdescribed. 7

2. vThe combination, with the plate, of a holder comprising a standardbolted to the plate and a spring for clamping the edge of the clothagainst the standard, substantially as described.

3. A cloth-holder for use in filter-presses, comprising, in combination,a standard and a springclamp secured at one end to the standard andcarrying at the other a stud or knob,

the standard being provided with a hole opspecification in the presenceof two subscribing witnesses.

PAUL OASAMAJOR.

\Vitnesses:

BENJ. T. ROGERS,

JOHN E. JAMES.

